31020300330112 has 64 divisors (see below), whose sum is σ = 62146649892600. Its totient is φ = 15422729011200.

The previous prime is 31020300329939. The next prime is 31020300330119. The reversal of 31020300330112 is 21103300302013.

It can be written as a sum of positive squares in 4 ways, for example, as 26855860165696 + 4164440164416 = 5182264^2 + 2040696^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 31020300330112.

It is not an unprimeable number, because it can be changed into a prime (31020300330119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220512214 + ... + 220652842.

Almost surely, 2^{31020300330112} is an apocalyptic number.

31020300330112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31020300330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31073324946300).

31020300330112 is an abundant number, since it is smaller than the sum of its proper divisors (31126349562488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31020300330112 is a wasteful number, since it uses less digits than its factorization.

31020300330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150345 (or 150333 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31020300330112 its reverse (21103300302013), we get a palindrome (52123600632125).

The spelling of 31020300330112 in words is "thirty-one trillion, twenty billion, three hundred million, three hundred thirty thousand, one hundred twelve".